keep to

• I must keep to myself, at least for some time .
  我暂时还要秘而不宣。
• Keep to your task till you 've finished .
  坚持工作，直到做完为止。
• Let us keep to companion of own rank .
  我们还是同阶级相等的人作朋友罢。
• What you write should keep to the point .
  你写的东西应该切题。
• Keep to every promise you have made .
  一切诺言都必须坚守不渝。
• Pedestrians , keep to the sidewalk [footpath] !
  行人走便道。
• She is old and infirm and has to keep to the house .
  她因年老体弱而足不出户。
• The ship kept to a steady course .
  那艘船一直沿原航线航行。
• All vehicles should keep to the right .
  车辆一律靠右走。
• Pedestrians keep to the side of the road .
  行人靠边走。